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Chemistry, 17.08.2021 22:50 JvGaming2001

Trong tự nhiên đồng có 2 đồng vị 63Cu và 65Cu tương ứng với tỉ lệ số nguyên tử là 3:1. a. Tính khối lượng của một thanh đồng nguyên chất chứa 2 mol Cu.
b. Tính khối lượng 63Cu trong 67,25 gam dung dịch CuCl2 20%.

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Trong tự nhiên đồng có 2 đồng vị 63Cu và 65Cu tương ứng với tỉ lệ số nguyên tử là 3:1. a. Tính khối...

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